The term real world is often used in mathematics education, yet the definition of real-world problems and how to incorporate them in the classroom remains ambiguous. One way real-world connections can be made is through guest speakers. Guest speakers can offer different perspectives and share knowledge about various subject areas, yet the impact of these speakers is unclear. This dissertation involves a mixed methods quasi-experimental study to evaluate the use of guest speakers to make real-world connections to the algebra curriculum. In an effort to determine the best qualities of guest speaker presentations as well as the impact the speakers may have on student attitude and achievement, a series of guest speakers were brought into a 9th grade algebra class; another 9th grade algebra class served as the control group. Through evaluating student, speaker, and teacher feedback, qualitative data revealed three themes pertaining to the most effective qualities of guest speaker presentations: the ability to engage, relate, and connect. Quantitative data from pre and post surveys was used to evaluate student attitude, while final exam scores and quarter grades were used to compare achievement levels in the speaker and non speaker group. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]